Answer:
there are 21 students in her class.
Step-by-step explanation:
Since the 12 girls corresponds to the 4 in the ratio, I multiplied the 3 by three to get the amount of boys. then add the boys to the girls to get 21 students.
23 and 2/3
you have 24 and you are taking away 1/3 of a whole
1/3 is equal to .333333333 repeating, as a decimal
therefore 1/3 is less than 1
you are taking away 1/3 of 1 away from 24
1 is equal to 3/3
take away 1/3 and you are left with 2/3
3/3-1/3=2/3
2/3 + 23 (the number that you did not touch)
and you are left with 23 2/3
Answer:
9 tapes
Step-by-step explanation:
First, subtract the handling charge from his $78.
78 - 3.50 = 74.5
So, Brian has $74.50 to purchase tapes. Each tape costs $7.50, so let's find out how many he can purchase.
74.50 / 7.50 = 9.933 (approximately)
Since Brian can't buy 0.933 of a tape, he will only be able to buy 9 tapes.
So the hypotenuse is the ladder's length, which is 6m, and the base of the 'triangle' is 1.5m. Therefore, you do 6^2 - 1.5^2 = 36 - 2.25 = 33.75. Then, you just square root it to get 5.80948m. Hope this helps!
